<?php
/**
 * lionfish 商城系统
 *
 * ==========================================================================
 * @link      http://www.liofis.com/
 * @copyright Copyright (c) 2015 liofis.com. 
 * @license   http://www.liofis.com/license.html License
 * ==========================================================================
 *
 * @author    fish
 *
 */

namespace Org\Util;

	
ini_set("memory_limit","512M");
class Zipfile {

    var $datasec = array ();
    var $ctrl_dir = array ();
    var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
    var $old_offset = 0;
    
    function unix2_dostime($unixtime = 0){
        $timearray = ($unixtime == 0) ? getdate () : getdate($unixtime);        
        if ($timearray ['year'] < 1980){
            $timearray ['year'] = 1980;
            $timearray ['mon'] = 1;
            $timearray ['mday'] = 1;
            $timearray ['hours'] = 0;
            $timearray ['minutes'] = 0;
            $timearray ['seconds'] = 0;
        }
        return (($timearray ['year'] - 1980) << 25) | ($timearray ['mon'] << 21) | ($timearray ['mday'] << 16) | ($timearray ['hours'] << 11) | ($timearray ['minutes'] << 5) | ($timearray ['seconds'] >> 1);
    }
    function add_file($data, $name, $time = 0){
        $name = str_replace('\\', '/', $name);
        
        $dtime = dechex($this->unix2_dostime($time));
        $hexdtime = '\x' . $dtime [6] . $dtime [7] . '\x' . $dtime [4] . $dtime [5] . '\x' . $dtime [2] . $dtime [3] . '\x' . $dtime [0] . $dtime [1];
        eval('$hexdtime = "' . $hexdtime . '";');
        
        $fr = "\x50\x4b\x03\x04";
        $fr .= "\x14\x00";
        $fr .= "\x00\x00";
        $fr .= "\x08\x00";
        $fr .= $hexdtime;
        
        $unc_len = strlen($data);
        $crc = crc32($data);
        $zdata = gzcompress($data);
        $zdata = substr(substr($zdata, 0, strlen($zdata)- 4), 2);
        $c_len = strlen($zdata);
        $fr .= pack('V', $crc);
        $fr .= pack('V', $c_len);
        $fr .= pack('V', $unc_len);
        $fr .= pack('v', strlen($name));
        $fr .= pack('v', 0);
        $fr .= $name;
        
        $fr .= $zdata;
        $fr .= pack('V', $crc);
        $fr .= pack('V', $c_len);
        $fr .= pack('V', $unc_len);
        
        $this->datasec [] = $fr;
        
        $cdrec = "\x50\x4b\x01\x02";
        $cdrec .= "\x00\x00";
        $cdrec .= "\x14\x00";
        $cdrec .= "\x00\x00";
        $cdrec .= "\x08\x00";
        $cdrec .= $hexdtime;
        $cdrec .= pack('V', $crc);
        $cdrec .= pack('V', $c_len);
        $cdrec .= pack('V', $unc_len);
        $cdrec .= pack('v', strlen($name));
        $cdrec .= pack('v', 0);
        $cdrec .= pack('v', 0);
        $cdrec .= pack('v', 0);
        $cdrec .= pack('v', 0);
        $cdrec .= pack('V', 32);
        
        $cdrec .= pack('V', $this->old_offset);
        $this->old_offset += strlen($fr);
        
        $cdrec .= $name;
        
        $this->ctrl_dir[] = $cdrec;
    }
    function add_path($path, $l = 0){
        $d = @opendir($path);
        $l = $l > 0 ? $l : strlen($path) + 1;
        while($v = @readdir($d)){
            if($v == '.' || $v == '..'){
                continue;
            }
            $v = $path . '/' . $v;
            if(is_dir($v)){
                $this->add_path($v, $l);
            } else {
                $this->add_file(file_get_contents($v), substr($v, $l));
            }
        }
    }
    function file(){
        $data = implode('', $this->datasec);
        $ctrldir = implode('', $this->ctrl_dir);
        return $data . $ctrldir . $this->eof_ctrl_dir . pack('v', sizeof($this->ctrl_dir)) . pack('v', sizeof($this->ctrl_dir)) . pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00";
    }
    
    function add_files($files){
        foreach($files as $file){
            if (is_file($file)){
                $data = implode("", file($file));
                $this->add_file($data, $file);
            }
        }
    }
    function output($file){
        $fp = fopen($file, "w");
        fwrite($fp, $this->file ());
        fclose($fp);
    }

}
	
	/*
		$data 数据 $arr = [
				//图片所在路径，图片名
				['imgurl'=>'imgurl.jpg','imgname'=>'imgname.jpg']
		];
		$filename 文件名
        网址：
        https://www.cnblogs.com/sanplit/p/6483432.html
	 */
	
	public function setZipfile($data,$filename)
	{
		
			$zip = new \Org\Util\Zipfile;
			$dfile =  tempnam('/Uploads/wxcode/tmp', 'tmp');//产生一个临时文件，用于缓存下载文件
			foreach($data as $v){

			    $zip->add_file(file_get_contents($v['imgurl']),  $v['number_id'].'.jpg');
			    // 添加打包的图片，第一个参数是图片内容，第二个参数是压缩包里面的显示的名称, 可包含路径
			    // 或是想打包整个目录 用 $zip->add_path($image_path);
			}
			//----------------------
			$zip->output($dfile);
			ob_clean();
			header('Pragma: public');
			header('Last-Modified:'.gmdate('D, d M Y H:i:s') . 'GMT');
			header('Cache-Control:no-store, no-cache, must-revalidate');
			header('Cache-Control:pre-check=0, post-check=0, max-age=0');
			header('Content-Transfer-Encoding:binary');
			header('Content-Encoding:none');
			header('Content-type:multipart/form-data');
			header('Content-Disposition:attachment; filename="'.$filename.'"'); //设置下载的默认文件名
			header('Content-length:'. filesize($dfile));
			$fp = fopen($dfile, 'r');
			while(connection_status() == 0 && $buf = @fread($fp, 8192)){
			    echo $buf;
			}
			fclose($fp);
			@unlink($dfile);
			@flush();
			@ob_flush();
			exit();
	}





?>